Timken - Ball Bearing Housed Units

RAO, LAO Heavy Series
BALL BEARING HOUSED UNITS
BALL BEARING HOUSED UNITS • CAST-IRON HOUSED UNITS • RAO, LAO
RAO, LAO HEAVY SERIES
• This is a compact, economic, heavy-duty ball
bearing housed unit.
• This series incorporates the tested and proven
features of the Timken standard RAK-series
N
pillow block.
• RAO-series bearings are equipped to handle
heavy capacity.
• LAO-series bearings are equipped with heavyseries
GN-KLLB wide-inner-ring ball bearings.
• The units are supplied with a self-locking collar
that eliminates shaft shoulders, machining
adapters and sleeves, and locknuts that provide
easy mounting.
Suggested shaft tolerances:
1 3 ⁄16 in. – 1 15 ⁄16 in., nominal to -0.013 mm, -0.0005 in.;
2 in. – 2 15 ⁄16 in., nominal to -0.025 mm, -0.0010 in.
To order, specify UNIT and SHAFT DIAMETER.
Example: RAO 1 7 ⁄16 in.
N
N 1
N 1
B 1 B 1
PIPE
L 1 L 1
1/ 8
1/ PIPE
PLUG 8
PLUG
H 2 H 2
H H
H 1 H 1
d 1 d 1
S 1 S 1
A A
J J
T T
L L
BEARING DATA
Unit Bearing No. Dimensions and Load Ratings
RAO GN-KRRB Page A-57
LAO GN-KLLB Page A-59
Unit (1)
Shaft
Dia. H H 2 B 1 L 1 J L A H 1 N N 1 d 1 S 1 T
in.
RAO 1 3 ⁄16
RAO 1 7 ⁄16
RAO 1 1 ⁄2
RAO 1 11 ⁄16
RAO 1 15 ⁄16
RAO 2 3 ⁄16
RAO 2 7 ⁄16
RAO 2 11 ⁄16
RAO 2 15 ⁄16
mm
in
47.63
1 7 ⁄8
53.98
2 1 ⁄8
60.33
2 3 ⁄8
66.68
2 5 ⁄8
71.44
2 13 ⁄16
77.79
3 1 ⁄16
84.14
3 5 ⁄16
96.84
3 13 ⁄16
104.78
4 1 ⁄8
mm
in.
93.7
3 11 ⁄16
104.0
4 3 ⁄32
117.5
4 5 ⁄8
130.2
5 1 ⁄8
141.3
5 9 ⁄16
153.2
6 1 ⁄32
165.9
6 17 ⁄32
192.1
7 9 ⁄16
204.8
8 1 ⁄16
(1)
LAO assembled with GN-KLLB bearing.
mm
in.
50.0
1 31 ⁄32
51.6
2 1 ⁄32
57.2
2 1 ⁄4
58.7
2 5 ⁄16
66.7
2 5 ⁄8
73.0
2 7 ⁄8
79.4
3 1 ⁄8
88.9
3 1 ⁄2
100.0
3 15 ⁄16
mm
in.
90.5
3 9 ⁄16
101.6
4
114.3
4 1 ⁄2
127.0
5
138.1
5 7 ⁄16
150.8
5 15 ⁄16
163.5
6 7 ⁄16
188.9
7 7 ⁄16
201.6
7 15 ⁄16
mm
in.
136.5
5 3 ⁄8
152.4
6
171.4
6 3 ⁄4
190.5
7 1 ⁄2
209.6
8 1 ⁄4
228.6
9
247.6
9 3 ⁄4
285.8
11 1 ⁄4
304.8
12
mm
in.
173.0
6 13 ⁄16
192.1
7 9 ⁄16
215.9
8 1 ⁄2
239.7
9 7 ⁄16
265.1
10 7 ⁄16
287.3
11 5 ⁄16
312.7
12 5 ⁄16
360.4
14 3 ⁄16
384.2
15 1 ⁄8
mm
in.
49.2
1 15 ⁄16
54.0
2 1 ⁄8
60.3
2 3 ⁄8
66.7
2 5 ⁄8
73.0
2 7 ⁄8
79.4 3
1⁄8
84.1
3 5 ⁄16
96.0
3 13 ⁄16
103.2
4 1 ⁄16
mm
in.
22.2
7⁄8
23.8
15⁄16
27.0
1 1 ⁄16
30.2
1 3 ⁄16
33.3
1 5 ⁄16
36.5
1 7 ⁄16
38.1
1 1 ⁄2
44.4
1 3 ⁄4
47.6
1 7 ⁄8
mm
in.
15.9
5⁄8
15.9
5⁄8
19.0
3⁄4
19.0
3⁄4
19.0
3⁄4
22.2
7⁄8
22.2
7⁄8
25.4
1
25.4
1
mm
in.
19.0
3⁄4
19.0
3⁄4
25.4
1
25.4
1
25.4
1
28.6
1 1 ⁄8
28.6
1 1 ⁄8
33.3
1 5 ⁄16
33.3
1 5 ⁄16
mm
in.
49.2
1 15 ⁄16
55.6
2 3 ⁄16
63.5
2 1 ⁄2
69.8
2 3 ⁄4
76.2
3
82.6
3 1 ⁄4
88.9
3 1 ⁄2
101.6
4
112.7
4 7 ⁄16
mm
in.
32.5
1 9 ⁄32
33.3
1 5 ⁄16
37.3
1 15 ⁄32
38.9
1 17 ⁄32
42.1
1 21 ⁄32
45.2
1 25 ⁄32
48.4
1 29 ⁄32
54.8
2 5 ⁄32
62.7
2 15 ⁄32
mm
in.
24.6
31⁄32
27.0
1 1 ⁄16
30.2
1 3 ⁄16
33.3
1 5 ⁄16
36.5
1 7 ⁄16
39.7
1 9 ⁄16
42.1
1 21 ⁄32
48.4
1 29 ⁄32
51.6
2 1 ⁄32
Bolt
Size
mm
in.
12
1⁄2
12
1⁄2
16
5⁄8
16
5⁄8
16
5⁄8
20
3⁄4
20
3⁄4
22
7⁄8
22
7⁄8
Bearing
No.
Collar
No.
Housing
No.
New
GN103KRRB SN103K T-18798
GN107KRRB SN107K T-18626
GN108KRRB SN108K T-18800
GN111KRRB SN111K T-18802
GN115KRRB SN115K T-18804
GN203KRRB SN203K T-18806
GN207KRRB SN207K T-18808
GN211KRRB SO211K T-18810
GN215KRRB SN215K T-18601
Unit
Wt.
kg
lbs.
1.898
4.18
2.406
5.30
3.755
8.27
5.030
11.08
6.265
13.80
7.940
17.49
9.761
21.50
15.322
33.75
18.205
40.10
TIMKEN ® HOUSED UNIT CATALOG • Download 3D Models and 2D Drawings at cad.timken.com A-85